Siemens SIRIUS 3RU User Manual

Product description
3.2 Versions
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
Manual, 09/2016, A5E03656507420A/RS-AB/003
19
3.2
Versions
Sizes, setting ranges, and device versions
The table below provides an overview of the various sizes in which 3RU21 thermal overload
relays and 3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relays are available. The
maximum rated currents, the minimum and maximum setting ranges, and the available
tripping classes are listed for each individual size.
Table 3- 1 3RU21 thermal overload relays
Size
Width
Current range
Rated operating
voltage U
e
Rated frequency
Trip class
S00
45 mm
0.11 to 16 A
690 V AC 50/60 Hz CLASS 10
S0 45 mm 1.8 to 40 A
S2 55 mm 11 to 80 A CLASS 10 or
CLASS 10A
S3 70 mm 28 ... 100 A 690 V AC CLASS 10
Table 3- 2 3RB20 / 3RB30 electronic overload relays
Size
Width
Current range
Rated operating
voltage U
e
Rated frequency
Trip class
S00
45 mm
0.1 to 16 A
690 V AC 50/60 Hz CLASS 10E or 20E
(fixed)
S0
45 mm
0.1 to 40 A
S2 55 mm 12.5 to 80 A 690 V AC
Through-hole
technology: 1000
V AC
S3
70 mm
12.5 ... 115 A
1000 V AC
S6
120 mm
50 ... 200 A
690 V AC
S10 / S12 145 mm 55 ... 250 A to
160 ... 630 A
690 V AC

Siemens SIRIUS 3RU Specifications

General

Brand	Siemens
Model	SIRIUS 3RU
Category	Control Unit
Language	English